Chery B11. Manual - part 102

2 

Is DTC C0034 set to be a current and historic 
troubleshooting code? 

 To 

Step 
13 

To Step 3 

3 

1. Shut off engine 
2. Check if the rear left wheel speed sensor and 
straddling wire harness are damaged?  
3. Thoroughly check the rear left gear to know if 
there is any damage (crack, missing tooth and 
loosening) 
Is there any physical damage?  

 To 

Step 
14 

To Step 4 

4 

1. Park the car 
2. Connect the scanning device and select the 
data list. 
3. Monitor wheel speed sensor 
4. Start the car and monitor the wheel speed 
sensor when the engine has started running but 
the car remains still.  
5. Gently step down the accelerator pedal to 
increase the engine idle speed.  
Is C0027 reset or if the rear left wheel speed 
exceeds 0 mile/h when the engine is running but 
the car remains still?  

 To 

Step 
15 

To Step 5 

5 

1. Connect the scanning device.  
2. Monitor wheel speed sensor 
3. Trial run the car until the setup speed upper 
limit is reached; then gradually slow down the 
car to zero speed. Repeat the steps several times. 
Is C0027 reset or does the rear left wheel speed 
variation exceed 5km/h (3 mile/h) during driving 
if compared with the speed of any other wheel?  

 To 

Step 6 

To Step 16 

6 

1. Park the car 
2. Lift and properly support the car. 
3. Detach the rear left straddling wire harness 
from the rear left wheel speed sensor.  
4. Connect the ohmmeter to the rear left wheel 
speed sensor terminals A and B.  
Is the resistance within the range required? 

800-
1,600ohm 
(resistance 
will 
increase 
with 
temperature 
rise 

To 
Step 7 

To Step 17 

7 

1. The car speed sensor is still detached from the 
straddling wire harness.  
2. Connect the ohmmeter to the rear left wheel 
speed sensor terminals A and B. 
3. Select AC mV scale.  
4. Rotate the rear left wheel while observing the 
voltmeter. 
Is the AC voltage within the range required? 

At least 
100V 

To 
Step 8 

To Step 17 

8 

1. Detach the EBCM wire harness from the 
EBCM. 
2. Detach the rear left straddling wire harness 
from the ABS car body wire harness.  
3. Connect an ohmmeter to the EBCM terminal 
A03 and then to the ABS car body wire harness 
terminal A.  
Is the resistance within the range required? 

Less than 
2ohm 

To 
Step 9 

To Step 18 

9 

1. EBCM wire harness remains detached from 
the EBCM.  
2. Straddling wire harness remains detached 
from the car body wire harness.  
3. Connect an ohmmeter to the EBCM terminal 
A04 and then to the ABS car body wire harness 
terminal B.  
Is the resistance within the range required? 

 

 

 

10 

1. EBCM wire harness remains detached from 
the EBCM.  
2. Straddling wire harness remains detached 
from the car body wire harness.  
3. Connect an ohmmeter to the EBCM terminals 
A03 and A04.   
Is the resistance within the range required? 

OL open 
circuit 

To 
Step 
11 

To Step 20 

11 

1. Replace rear left straddling wire harness.  
2. Trial run the car at various speeds on various 
road surfaces.  
Is C0027 reset?  

 To 

Step 
21 

Car 
maintenance

12 

Check the diagnostic circuit before making the 
DTC0027 fault table. 

 

 

 

13 

Prepare C0027 diagnostic chart before making 
the DTC0027 fault table.  

 

 

 

14 

Repair damage to the rear left wheel speed 
sensor, straddling wire harness and/or gear ring. 

 

 

 

15 

The cause of C0027 is the noise of ignition 
switch coupled to the rear left wheel speed 
sensor.  
Check if there is any potential source of ignition 
noise for rear left ABS card body wire harness 
and/or straddling wire harness, like spark plug 
wire, etc. Rearrange the wire as the case may 
require.  

 

 

 

16 

DTC C0027 is intermittent. Refer to “Assistance 
to troubleshooting”. 

 

 

 

17 

Replace the rear left wheel speed sensor.  

 

 

 

18 

Repair the open circuit or high resistance 
between terminals A03 and A.  

 

 

 

19 

Repair the open circuit or high resistance 
between terminals A04 and B.  

 

 

 

20 

Repair the short circuit between two wires.  

 

 

 

21 

Replace the EBCM.  

 

 

 

 
 
Eleven. C0028 Excessive fluctuation of rear right wheel speed 
 
 

Straddling 
wire 

Wheel speed sensor 

Car body wire harness 

 
 
 

Gear 
ring 

 
 
 
 
 
 
1. Description of circuit 
The wheel speed sensor will create an AC 
voltage that increases with the increase of 
wheel speed. EBCM then calculates the 
wheel speed on the basis of the AC signal 
frequency. The speed sensor is connected 
to the EBCM by a twisted pair which can 
reduce the noise vulnerability of 
troubleshooting codes.  
 
2. Conditions for setup of 
troubleshooting codes 
The following conditions will have to be 
met for the setup of C0028:  
(1) C0032, C0033, C0034 or C0035 is not 
current.  
(2) Braking switch is on.  
(3) Rear right wheel is accelerating or 
decelerating, which exceeds the reasonable 
limit.   
 
3. Actions to be taken for setup of 
troubleshooting codes 
(1) The electromagnetic relay is turned off 
and pump motor and solenoid are 
disconnected with the power source.  
(2) Save DTC C0028.  

(3) ABS is disabled and ABS alarm lamp 
is on.  
 
4. Conditions for clearing 
troubleshooting codes 
(1) If the conditions for setting up 
troubleshooting code C0028 are gone, 
corresponding scanning tools can be used 
to clear the troubleshooting code.  
(2) If the troubleshooting code does not 
appear for 100 driving cycles running, it 
can be eliminated from the database.  
 
5. Assistance to troubleshooting 
In the case of any interrupted 
troubleshooting code, please thoroughly 
check the wiring and connectors, which 
shall include:  
(1) Unfix guard pipes and check if the 
wiring is damaged, short circuited and 
polluted.  
(2) Check if the terminals are deformed 
and/or damaged.  
(3) Check the contact (fastness) of 
terminals by the spare male/female 
terminals.  
(4) Check if the wire terminals are correct 
by unfixing terminals from the connector.  

If the driver complains that the ABS alarm 
lamp only illuminates when there is a 
change in environment moisture (rain, 
snow and car washing), please thoroughly 
check if any wheel speed sensor is soaked. 
If the troubleshooting code is not current, 
then simulate the impact of water soaking. 
Follow the following steps: spray 5% 
brine on suspected area. Then trial run the 
car at a speed of over 24km/h (15m/h) on 
various road surfaces (e.g. bumpy or 
curved road, etc). If any troubleshooting 
code appears, then replace the suspected 
wire harness and/or sensor.  
Check any gear ring carefully to find if 
there is any crack or tooth damage. If the 
troubleshooting code is set up at the same 
speed of each driving cycle, then the gear 

ring is highly possible to have been 
damaged.  
Any failure in carefully and thoroughly 
following the above steps will possibly 
result in wrong diagnosis, unnecessary 
component replacement and reoccurrence 
of DTC C0028. 
 
 
 
 
 
 
 
 
 
  

6. Diagnostic steps 

Step Diagnostic 

action 

Expected 
value 

Yes No 

1 

If the checking of diagnostic circuit has been 
finished 

 To 

Step 2 

To Step 12 

2 

Is DTC C0035 set to be a current and historic 
troubleshooting code? 

 To 

Step 
13 

To Step 3 

3 

1. Shut off engine 
2. Check if the rear right wheel speed sensor and 
straddling wire harness are damaged?  
3. Thoroughly check the rear right gear to know 
if there is any damage (crack, missing tooth and 
loosening) 
Is there any physical damage?  

 To 

Step 
14 

To Step 4 

4 

1. Park the car 
2. Connect the scanning device and select the 
data list. 
3. Monitor wheel speed sensor 
4. Start the car and monitor the wheel speed 
sensor when the engine has started running but 
the car remains still.  
5. Gently step down the accelerator pedal to 
increase the engine idle speed.  
Is C0028 reset or if the rear right wheel speed 
exceeds 0 mile/h when the engine is running but 
the car remains still?  

 To 

Step 
15 

To Step 5 

5 

1. Connect the scanning device.  

 

To 

To Step 16